JP6434831B2 - Insulation barrier for switchgear - Google Patents

Description

  The present invention is a switchgear equipped with a drawer type circuit breaker, and can be attached to the opening of the circuit breaker housing chamber when performing inspection and the like by pulling out the drawer type circuit breaker housed in the circuit breaker housing chamber inside the housing. Related to an insulating barrier.

  A switchgear having a pull-out type circuit breaker is used as a device for turning on and off the power supply system of various devices in a power plant or the like. In this switchgear, a drawer type circuit breaker having a movable contact terminal is accommodated in a circuit breaker accommodating chamber in the housing, and the movable contact terminal of the drawer type circuit breaker is connected to the fixed contact terminal of the main circuit protruding into the circuit breaker accommodating chamber. When the power supply system is turned on by connection, and the maintenance / inspection is performed, the door on the front of the housing is opened and the drawer type circuit breaker is pulled out of the circuit breaker housing chamber, and the movable contact terminal and fixed contact terminal The power supply system is turned off by disconnecting.

  In such a switchgear, when the drawer type circuit breaker is housed at a position higher than the ground level, the drawer is opened by opening the door to bring out the drawer type circuit breaker from the circuit breaker housing chamber. It is installed in the lower front part of the opening of the storage chamber, and the operation is performed with the drawer type circuit breaker being pulled out on the frame. At this time, the door remains open (the drawer stand is installed, so the door cannot be closed), and the operator wraps around the back side of the drawer type circuit breaker and performs work. If this is the case, the fixed contact terminal protrudes in a state where it is exposed in the circuit breaker accommodating chamber, and there is a risk that an accident such as an electric shock by an operator coming into contact with the fixed contact terminal may occur.

  For this reason, conventionally, a shield plate made of an insulating material is erected on the carriage, and this carriage is accommodated in the breaker accommodation chamber and shielded when the drawer type circuit breaker is pulled out of the breaker accommodation room. It is considered that the front surface of the fixed contact terminal is covered with a plate so that an operator does not touch it by mistake.

JP 2009-171774 A

However, in the above-described configuration in which the cart provided with the above-described shielding plate is accommodated in the circuit breaker accommodating chamber, a sufficient effect can be obtained if the cart can be accommodated in the circuit breaker accommodating chamber. However, the drawer type circuit breaker is placed on the drawer rack. Since it is necessary to work in the pulled out state, it is difficult to insert the carriage into the breaker accommodating chamber if there is not enough space between the pulled-out type breaker and the opening of the breaker accommodating chamber. There is an inconvenience that it is difficult to install the shielding plate.
In addition, there is a risk that the shield plate comes into contact with the movable contact terminal of the circuit breaker and breaks the movable contact terminal at the festival of inserting the carriage equipped with the shield plate in the circuit breaker accommodation chamber.

  Furthermore, since the cart provided with the above-described shielding plate is configured to be inserted into the circuit breaker accommodating chamber from between the pull-out type circuit breaker and the housing, the operator can intentionally remove the cart provided with the shielding plate. It became possible, and it became possible to approach the charging part.

  The present invention has been made in view of such circumstances, and even when the drawn circuit breaker is in the vicinity of the housing, the opening of the housing can be easily and reliably closed and intentionally removed. The main problem is to provide an insulating barrier for switchgear that cannot be used. It is another object of the present invention to provide an insulating barrier that can be attached to the opening of a circuit breaker accommodating chamber of various switch gears while reliably preventing access to a charging unit.

  In order to achieve the above object, an insulating barrier for a switchgear according to the present invention is housed in a circuit breaker accommodating chamber in a housing having an opening on the front face so that it can be pulled out, and is fixedly contacted to protrude into the circuit breaker accommodating chamber. An insulating barrier used in a switchgear having a pull-out type circuit breaker having a movable contact terminal that is detachably connected to a terminal, the insulating panel being detachably attached to the opening, and the insulating panel Fixing means for fixing the mounting state, and the insulating panel has an upper edge portion, an upper edge portion of the frame body of the opening portion, or both sides of the opening portion at an upper portion of the opening portion. A latching tool that can be latched to a latching arm member that is detachably fixed to an edge is provided, and the fixing means is the upper edge of the frame body of the opening or the latching The opening is below the arm member. With respect to the fixed arm member which is detachably secured to the side edges, it is characterized in that the insulating panel disposed on the front side is for fixing by locking by lock.

Therefore, in the state where the drawer type circuit breaker is pulled out from the circuit breaker accommodating chamber of the housing, the opening is in an open state, and the fixed contact terminal protruding into the circuit breaker accommodating chamber is behind the drawer type circuit breaker. Although it is in an exposed state, if there is a frame in the opening of the circuit breaker accommodating chamber, a fixing arm member is constructed so as to pass both side edges to the middle part (or lower part) of the opening, When there is no frame in the opening of the housing, a hooking arm member and a fixing arm member are installed over the upper and middle (or lower) of the opening so that both side edges are passed over. Then, the insulating panel is hooked on the upper edge portion of the frame body of the opening or on the hooking arm member fixed to the upper portion of the opening, and the mounting state of the insulating panel is fixed to the fixing arm member. Since it is fixed by locking with a lock, it is between the drawer type circuit breaker and the opening. Even if the pace cannot be kept large, it is possible to close the opening, and by making the operator different from the one that manages the key of the lock, the operator intentionally tries to remove the insulating panel However, unless the lock is unlocked, the insulating panel cannot be removed.
Therefore, even if the worker turns around behind the drawer type circuit breaker, the fixed contact terminal exposed in the housing is arranged on the opposite side of the worker with the insulating panel as the boundary. The operator will not accidentally touch the fixed contact terminal.

  Here, the locking by the lock of the insulating panel with respect to the fixing arm member is provided with a ring member protruding radially in the fixing arm member, and the ring member is inserted through a through hole formed in the insulating panel. It is preferable that the lock is attached to the ring member and fixed from the front side of the insulating panel.

  Moreover, the said latching arm member and the said fixing arm member are good to comprise, for example with the extension rod which can be expanded-contracted. According to such a configuration, even if the width of the opening of the housing varies, the arm member can be installed and the insulating panel can be attached.

  If the width of the opening of the circuit breaker accommodating chamber varies, if the insulating panel has a predetermined width, the opening cannot be completely closed by the insulating panel, and a gap is formed on the side of the insulating panel. There is an inconvenience. For this reason, when the width of such an opening is larger than the width of the insulating panel and cannot be blocked by the insulating panel, the insulating arm that closes a part of the opening is fixed to the fixing arm member. The body panel is fixed in advance, and the integrated panel is provided with a latching tool that can be latched on the latching arm member on the upper edge thereof, and the insulating panel allows the A portion of the opening that is not closed by the integrated panel may be closed.

In addition, a drooping plate that can be slid downward is provided at the lower end of each panel in preparation for a case where a gap is formed below the panel when an insulating panel or an integrated panel is attached. Further, it may be provided.
Further, when the upper part of the opening of the circuit breaker accommodating chamber is open, a top plate that rotates toward the circuit breaker accommodating chamber may be provided on the upper part of the insulating panel in order to close the open part. .

  As described above, according to the present invention, the insulating barrier provided at the opening of the circuit breaker housing chamber of the housing in which the drawer type circuit breaker is accommodated, and the insulating panel provided with the latching device at the upper edge. And a fixing means for fixing the mounting state of the insulating panel, and the insulating panel is detachably fixed to the upper edge of the frame of the opening or the upper part of the opening. At the middle or lower part of the opening (below the upper edge of the frame of the opening or the part to which the hooking arm member is attached) Since the insulating panel is placed on the front side and fixed by locking with a lock against the fixing arm member that is detachably fixed to both side edges of the opening, the drawer type circuit breaker and the opening Install an insulating panel in the opening even if the gap between In addition, since the insulating panel attached to the opening cannot be removed unless it is unlocked, there is no possibility that the worker will approach the live part (fixed contact terminal), and an electric shock accident due to misidentification is avoided. In addition, it becomes difficult to intentionally remove the insulating panel.

  In addition, since the latching device of the insulating panel is latched and attached to the upper edge of the frame of the opening or the arming member fixed near the upper end of the opening, the insulation barrier is attached. It is possible to shorten the time required for the process.

FIG. 1 is a diagram for explaining a switchgear, where (a) is a front view thereof and (b) is a side view thereof. FIG. 2 is a front view showing a first configuration example of an insulating barrier for switchgear according to the present invention. FIGS. 3A and 3B are diagrams showing an insulating panel of an insulating barrier for switchgear according to the first configuration example of the present invention, in which FIG. 3A is a front view thereof, FIG. 3B is a side view thereof, and FIG. FIG. 4D is an enlarged perspective view showing a portion provided with a stopper, and FIG. 4D is a view showing a state in which an insulating panel is fixed to a fixing arm member by locking with a lock. FIG. 4 is a perspective view showing a state before the insulating panel according to the first configuration example is attached. FIG. 5 is a diagram illustrating a modification of the insulating panel according to the first configuration example. FIG. 6 is a diagram illustrating another modification of the insulating panel according to the first configuration example. FIG. 7 is a perspective view showing a state before the insulating panel shown in FIG. 6 according to the first configuration example is attached. FIGS. 8A and 8B are diagrams showing a latching arm member and a fixing arm member used in the insulating barrier for a switchgear according to the present invention, wherein FIG. 8A is a latching arm member, and FIG. 8B is a fixing arm. The member is shown. FIG. 9 is a view showing a modification of the insulating panel shown in FIG. FIG. 10 is a perspective view showing a second configuration example of the switchgear insulating barrier. FIG. 11 is a diagram illustrating an example of use in the case where the opening is attached to a housing having a wide width.

  Embodiments of an insulating barrier for switchgear according to the present invention will be described below with reference to the drawings.

  In FIG. 1, a switch gear 1 includes a switch gear main body 2 that opens and closes an electric circuit, and a channel base 3 that is disposed below the switch gear main body 2 and supports the switch gear main body 2.

  The switchgear main body 2 accommodates a circuit breaker accommodating chamber 6 for accommodating a pull-out type circuit breaker 11, a cable chamber 8 for accommodating a transformer 7 and a power cable (not shown), and a disconnector by a partition wall 5 inside the housing 4. The circuit breaker chamber 6 is divided into a disconnector chamber (not shown), and a door 10 for opening and closing the opening 9 of the circuit breaker housing chamber 6 is provided on the front surface of the circuit breaker housing chamber 6.

  The drawer type circuit breaker 11 has a circuit breaker body 12 fixed on a carriage 13 and can move linearly on a drawer rail 3 a provided on the channel base 3.

  A fixed contact terminal 15 connected to a switchboard (main circuit) is provided on the rear surface side of the circuit breaker housing chamber 6 so as to project in the circuit breaker housing chamber 6 in a substantially horizontal direction. On the other hand, the number of movable contact terminals 16 corresponding to each fixed contact terminal 15 protrudes in a substantially horizontal direction on the rear surface side of the circuit breaker body 12, that is, the surface facing the fixed contact terminal 15. Yes. And the draw-out type circuit breaker 11 is accommodated in the circuit breaker accommodating chamber 6 so that the movable contact terminal 16 is connected to the fixed contact terminal 15 and the power supply system is brought into a connected state. Further, in order to perform maintenance and inspection, the drawer type circuit breaker 11 is pulled out of the circuit breaker housing chamber 6 and the movable contact terminal 16 and the fixed contact terminal 15 are disconnected, thereby opening the power supply system being charged.

  When the pull-out type circuit breaker 11 is pulled out from the opening 9 of the circuit breaker housing chamber 6 in order to separate the movable contact terminal 16 from the fixed contact terminal 15, the door 10 on the front surface of the circuit breaker housing chamber 6 is opened and pulled out. The gantry 18 is installed in the lower front part of the opening 9 of the housing 4, and the drawer type circuit breaker 11 is pulled out on the drawer gantry 18.

  For this reason, the door 10 cannot be closed by the drawer stand 18, and the operator wraps around the back side of the drawer type circuit breaker 11 (between the drawer type circuit breaker 11 and the opening 9) to perform the work. If this is the case, the fixed contact terminal 15 protrudes into the circuit breaker housing chamber and is exposed, so there is a risk of an accident such as an operator touching the fixed contact terminal 15 to get an electric shock. Therefore, in the present invention, when the pull-out type circuit breaker 11 is pulled out from the circuit breaker accommodating chamber 6, an insulating barrier 20 described below is attached to the opening 9 of the circuit breaker accommodating chamber 6 so that the operator can connect the fixed contact terminal 15. It tries to prevent approaching.

  FIG. 2 shows a state in which an insulating barrier 20 for switchgear is attached to the opening 9 of the circuit breaker housing chamber 6. The insulating barrier 20 includes an insulating panel 21 that is detachably mounted so as to close the opening, and a fixing means 22 that fixes the mounting state of the insulating panel.

  The insulating panel 21 is formed of, for example, a hard transparent resin plate such as polycarbonate, and is formed in a rectangular shape in accordance with the size of the opening 9 (the width is such that both side edges of the opening 9 are passed). The height is formed such that the height extends from the upper edge portion 23a of the frame 23 of the opening 9 to the immediate vicinity of the drawer rail 3a provided on the lower surface of the circuit breaker accommodating chamber 6). As shown in FIGS. 3 and 4, a hooking tool 24 that can be hooked on the upper edge 23 a of the frame 23 of the opening 9 is provided on the upper edge of the insulating panel.

  In this example, the frame body 23 provided in the opening portion 9 is formed in a flange shape whose front end portion is bent outward, and the door 10 is closed so as to cover the frame body 23 including this flange portion. It has become. The latch 24 is formed of a metal fitting provided with a hook portion 24a whose upper end is folded back. In this example, the hook 24 is disposed on the rear surface of the insulating panel and is provided with a fitting metal 25 provided on the front surface of the insulating panel 21. The insulating panel 21 is sandwiched between and fixed to the insulating panel with bolts and nuts, and is provided at three positions at equal intervals on the upper end of the insulating panel. By hooking the hook portions 24a of the respective hooks 24 to the flange portion provided at the upper edge portion 23a of the frame body 23 provided at the opening portion 9, the insulating panel 21 is framed at the opening portion 9. 23 can be suspended. Reference numeral 26 denotes a packing member formed of a sponge or the like for reducing looseness when the latching tool 24 is attached to the frame body 23.

  In addition, the opening 9 is passed to the side edges of the opening 9 in the horizontal direction at a position below the upper edge 23a of the frame 23, in this example, at a position 20 to 30 cm from the lower end of the opening 9. The fixing arm member 27 provided in the detachable is fixed detachably.

  The fixing arm member 27 is composed of a stretchable stretching rod configured to be slidably inserted into a small diameter cylindrical body 27b inside a large diameter cylindrical body 27a. , Pressing portions 27c and 27d having a pair of locking pieces extending so as to sandwich the side edge of the opening at both ends, and adjusting the protruding amount of the small-diameter cylindrical body 27b Each side edge of 9 is inserted between a pair of locking pieces at the corresponding end, and the pressing parts 27c and 27d are pressed against both side edges, so that they are passed between the side edges of the opening 9. Has been.

  A lock attachment member 28 protruding in the radial direction is attached to an intermediate portion of the fixing arm member 27. Specifically, the lock mounting member 28 is configured such that a plate 28b on which a ring member 28a made of metal is integrally fixed is applied to the side surface of the large-diameter cylindrical body 27a of the fixing arm member 27, and the plate 28b. The ring member 28 a is fixedly attached to the fixing arm member 27 by inserting a U-shaped metal fitting 28 c that is turned around the fixing arm member 27 and fastening with a nut.

A through hole 29 through which the ring member 28a can be inserted is formed at a position of the insulating panel 21 facing the lock mounting member 28 (ring member 28a). The through hole 29 is formed in a rectangular shape so that only the ring member 28 a can be inserted. In this example, the number of the ring members 28 a attached to the fixing arm member 27 is the same. Only one in total is provided.
In addition, the ring member 28a (lock attachment member 28) and the through-hole 29 which penetrates this may be provided with two or more.

Then, in a state where the insulating panel 21 is disposed on the front surface of the fixing arm member 27, the ring member 28 a is inserted into the through hole 29 formed in the insulating panel 21 so as to protrude toward the front surface side of the insulating panel 21. The lock member (padlock) 30 is attached to the ring member 28a protruding from the through hole 29 for locking.
In addition, 21a is a notch for passing the wiring for connecting the circuit breaker pulled out during the operation test and the switchgear body, and the wiring extraction position differs depending on the type of the switchgear. Is provided.

  In the above configuration, in order to form the mounting state of the insulation barrier shown in FIG. 1, first, the fixing arm member 27 is fixed so as to pass both side edges at the intermediate portion or the lower portion of the opening 9, and the ring member 28a is in a state facing forward.

Thereafter, the insulating panel 21 to which the latching tool 24 is attached is brought close to the front surface of the opening 9, the latching tool 24 is latched to the upper edge 23a of the frame 23, and the entire front surface of the opening 9 is insulated. Cover (close) with panel 21.
Then, when the ring member 28a is inserted into the through hole 29 of the insulating panel 21, and the lock 30 is attached to the ring member 28a protruding forward and locked, the mounting state of the insulating panel 21 is fixed.

  Therefore, if there is a clearance for inserting and locking the insulating panel 21 from the side on the front surface of the opening 9, the closed state of the opening 9 can be formed. Even when the space between them is narrow, the installation work of the insulating panel 21 can be easily performed.

  Further, since the insulating panel 21 is fixed to the fixing arm member 27 by locking with the lock 30, even if the operator intentionally removes the insulating panel 21, unless the lock 30 is unlocked. Since it cannot be removed, it is possible to avoid a possibility that an operator may come into contact with the charging unit (fixed contact terminal 15) and receive an electric shock. Therefore, by separating the person who manages the key of the lock 30 and the worker, it is possible to reliably avoid an electric shock accident.

  FIG. 5 shows a modification of the insulating panel 21. Hereinafter, the differences from the above configuration example will be described. The insulating panel 21 shown in FIG. 5 is provided with a hanging plate 31 that can be moved further downward at the lower end of the insulating panel 21 shown in FIG. It has been.

  Similar to the insulating panel 21, the hanging plate 31 is formed of a hard transparent resin plate such as polycarbonate, has the same horizontal width as the insulating panel 21, and has a vertical dimension of an appropriate predetermined length. . A slit 32 is formed in the longitudinal direction at both side edges, and an adjusting screw that is inserted into the insulating panel 21 so as to be relatively movable and is screwed into a predetermined position of the insulating panel 21. 33 is provided, and the hanging plate 31 can be moved up and down by loosening the adjusting screw 33, and the hanging plate 31 is fixed at a desired position within the length of the slit 32 by tightening the adjusting screw 33. Be able to.

  In such a configuration, when a gap is formed between the lower end of the insulating panel 21 attached to the opening 9 and the lower end of the opening 9, and there is a request to close the gap, the hanging plate 31 is This can be dealt with by lowering to the lower end of the opening 9 and fixing it to the insulating panel 21. Even when the vertical width of the opening 9 is different for each type of switchgear, the opening 9 is closed without gaps. It becomes possible.

  6 and 7, another modification example of the insulating barrier 20 is shown. In this configuration example, there is no frame at the top of the opening 9, and the insulating barrier 20 is attached to the housing 4 that is open above the opening of the circuit breaker housing chamber 6. The upper edge portion is provided with a latching tool 36 that can be hooked on a latching arm member 35 that is detachably fixed to both side edge portions of the opening portion 9 in the horizontal direction with respect to the upper portion of the opening portion 9. .

  The arm member 35 for latching is also comprised by the stretchable extending | stretching stick | rod comprised so that the length adjustment was possible by inserting the small diameter cylindrical body 35b inside the large diameter cylindrical body 35a so that sliding was possible. The pressing portions 35c and 35d having a pair of locking pieces extending so as to sandwich the side edge of the opening at both ends, and adjusting the protruding amount of the small-diameter cylindrical body 35b Each side edge of 9 is inserted between a pair of locking pieces at the corresponding end, and the pressing parts 35c and 35d are pressed against both side edges to be fixed between the side edges of the opening 9. Has been.

  In this example, the hooking tool 36 has an R shape in which the folded portion at the upper end is somewhat larger than the arm diameter of the hooking arm member 35 so as to be locked in contact with the side surface of the hooking arm member 35. Is formed. It should be noted that the lower end of the insulating panel 21 is arranged so that the lower end of the insulating panel 21 is not extended to prevent the load of the insulating panel 21 from being excessively applied in the state where the hook 36 is hooked. It is desirable to be attached at a position where it is placed on top.

In this example, a top plate 37 that rotates toward the circuit breaker accommodating chamber 6 is rotated by a hinge 38 at the upper end of the insulating panel 21 in order to close the open portion 9 a at the top of the opening 9. It is attached as possible.
The notch 21a through which the cable is passed is formed at a position appropriately changed according to the switch gear, but the other configurations are the same as those in the above configuration example. Description is omitted.

  In such a configuration, in order to attach the insulating barrier 20 to the opening 9 of the circuit breaker housing chamber 6, first, the latching arm member 35 is fixed to the upper portion of the opening 9 so as to pass between both side edges. In addition, the fixing arm member 27 is fixed to the middle portion or the lower portion of the opening 9 so as to pass between both side edges, and the ring member 28a is directed forward.

  At this time, the cylindrical bodies (large-diameter cylindrical bodies 35a and 27a, small-diameter cylindrical bodies 35b and 27b) of the latching arm member 35 and the fixing arm member 27 are formed eccentric to the pressing portions at both ends. In the case of the latching arm member 35, as shown in FIG. 8A, the cylindrical bodies (large-diameter cylindrical body 35a, small-diameter cylindrical body 35b) are eccentric to the front side. So that the latching tool 36 of the insulating panel 21 can be easily locked, and the fixing arm member 27 has a cylindrical body (large size) as shown in FIG. The insulating panel 21 is attached to the circuit breaker housing chamber side so that the diameter cylindrical body 27a and the small diameter cylindrical body 27b are eccentric to the circuit breaker housing chamber side, and the insulating panel 21 is fixed to the end face (both side edge portions) of the opening 9 by the plate 28b. (A gap is formed between the insulating panel 21 and the opening 9). It is to avoid being would) disadvantage is.

Thereafter, the insulating panel 21 to which the hook 36 is attached is brought close to the front surface of the opening 9, the hook 36 is hooked on the hooking arm member 35, and the entire front surface of the opening 9 is covered with the insulating panel 21. Then, the top plate 37 is tilted toward the circuit breaker housing chamber to close the open portion 9a at the top of the opening 9.
After that, if the ring member 28a is inserted into the through hole 29 of the insulating panel 21, and the lock 30 is attached to the ring member 28a protruding forward and locked, the mounting state of the insulating panel 21 is fixed.

  In such a modified example, the same effect as the above configuration can be obtained, and the open portion formed at the top of the opening can be closed by the top plate 37. It becomes possible to prevent inserting a hand.

  In such a configuration, it is possible to prevent a gap from being formed at the lower end of the insulating panel 21 by adjusting the mounting position of the latching arm member 35, but this is shown in FIG. 6 is provided at the lower end of the insulating panel 21 shown in FIG. 6 with the same hanging plate 31 as in FIG. 5 that can be moved further downward, and a gap is formed below the insulating panel 21. The gap may be closed.

Another embodiment is shown in FIGS.
In this example, an insulating barrier 20 that can cope with the case where the opening 9 of the circuit breaker accommodating chamber 6 is formed wide is provided, and when the frame is provided on the frame 23 provided in the opening 9. A configuration example will be described.

  An integral panel 41 having a predetermined width for closing a part of the opening 9 is fixed to the fixing arm member 27 in advance. The integrated panel 41 is formed of a hard transparent resin plate such as polycarbonate, and a hooking tool 24 similar to that shown in FIG. ing.

  The fixing arm member 27 is constituted by a stretchable stretching rod configured by slidably inserting a small-diameter cylindrical body 27b inside the large-diameter cylindrical body 27a, as in the above configuration example. The back surface of the integrated panel 41 is fixed in the width direction by a U-shaped bracket 42a and a mounting plate 42b for attaching the U-shaped bracket 42a.

The ring member 28a is fixed to the small-diameter cylindrical body 27b of the fixing arm member 27 (from the end portion (pressing portion 27d) of the small-diameter cylindrical body 27b to the integral panel side by a predetermined length). Fixed to the site). The insulating panel 21 is attached so as to partially overlap the integrated panel 41, and the overlap margin with the integrated panel 41 is adjusted so as to close a portion of the opening 9 that is not covered by the integrated panel 41. In this state, the ring member is inserted into the through hole 29 of the insulating panel 21, and the lock 30 is attached to the ring member 28a protruding to the front side.
In addition, since the other structure is the same as that of the said structural example, the same code | symbol is attached | subjected to the same location and description is abbreviate | omitted.

  Therefore, in such a configuration, the latch 24 of the integrated panel 41 is locked to the upper edge portion 23a of the frame body 23 of the opening 9, and the length of the fixing arm member 27 is adjusted (small diameter cylinder). (Adjusting the protruding amount of the body 27b), the both side edges of the opening 9 are fixed so as to pass. Then, the insulating panel 21 is locked to the upper edge portion 23a of the frame body 23 so as to close the portion of the opening 9 that is not covered with the integrated panel 41, and the ring member 28a is attached to maintain the state. It is inserted through the through hole 29 of the insulating panel 21 and locked by the lock 30.

  For this reason, even when the width of the opening 9 is wide, the length of the fixing arm member 27 is adjusted (the width of the portion where the integrated panel 41 and the insulating panel 21 overlap) is adjusted. Since the entire portion can be closed, even if the width of the opening 9 varies, it is possible to cope with it.

  Even in such a configuration, a hanging plate similar to the above may be provided below the integrated panel 41 or the insulating panel 21 and can be moved further downward.

  Moreover, in the above-mentioned example, although the structural example which latches the latching tool 24 with respect to the upper edge part 23a of the frame 23 of the opening part 9 was shown, in the case where there is no frame in the upper part of the opening part 9, The hooking arm member 35 is detachably provided on both side edges of the opening 9 in the horizontal direction at the upper part of the opening 9, and the latching tool is hooked on the hooking arm member 35. It is also possible to have a configuration of

DESCRIPTION OF SYMBOLS 1 Switch gear 4 Housing | casing 6 Circuit breaker accommodating chamber 9 Opening part 11 Pull-out type circuit breaker 15 Fixed contact terminal 16 Movable contact terminal 21 Insulating panel 22 Fixing means 23 Frame 23a Upper edge part 24 Latching tool 27 Fixing arm member 28a Ring member 29 Through-hole 30 Lock 31 Locking plate 35 Arm member for locking 36 Hanging stopper 41 Integrated panel

Claims (7)

A drawer type circuit breaker having a movable contact terminal detachably connected to a fixed contact terminal projecting into the circuit breaker housing chamber, which is removably housed in a circuit breaker housing chamber in a housing having an opening on the front surface. An insulating barrier used for a switchgear having
An insulating panel detachably attached to the opening, and a fixing means for fixing the mounting state of the insulating panel;
The insulative panel is detachably fixed to the upper edge of the upper edge of the frame of the opening or to both side edges of the opening at the top of the opening. It has a latch that can be latched to the arm member,
The fixing means is attached to an upper edge portion of the frame body of the opening portion or a fixing arm member that is detachably fixed to both side edge portions of the opening portion below the hooking arm member. An insulating barrier for switchgear, wherein the insulating panel is disposed on the front side and fixed by locking with a lock.   In order to lock the insulating panel with respect to the fixing arm member, a ring member protruding in the radial direction is provided on the fixing arm member, and the ring member is inserted through a through hole formed in the insulating panel. 2. The switchgear insulation barrier according to claim 1, wherein the lock is attached to the ring member from the front side of the insulating panel.   The switchgear insulation barrier according to claim 1 or 2, wherein the latching arm member and the fixing arm member are formed of stretchable extension rods. The fixing arm member is preliminarily fixed with an integrated panel having a predetermined width that closes a part of the opening,
The integrated panel is provided with a latching tool capable of being hooked to the upper edge portion of the frame body or the hooking arm member at an upper edge portion thereof.
The insulating barrier for switchgear according to any one of claims 1 to 3, wherein the insulating panel closes a portion of the opening that is not closed by the integrated panel.   The insulation barrier for switchgear according to any one of claims 1 to 4, further comprising a hanging plate slidable downward at a lower end portion of the insulating panel.   5. The switchgear insulation barrier according to claim 4, further comprising a hanging plate slidable downward at a lower end portion of the integrated panel.   The switchgear insulation barrier according to any one of claims 1 to 6, wherein a top plate that rotates toward the circuit breaker housing chamber is provided on an upper portion of the insulating panel.

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